/Engine/Plugins/Importers/USDImporter/Source/USDExporter/Public/MaterialExporterUSD.h
Exports the provided materials next to the stage's root layer on disk, replacing usages of unrealMaterials within `Stage_ with references to the exported UsdPreviewMaterial assets.
Whether the export was successful or not.
static bool ExportMaterialsForStage ( const [TArray](API\Runtime\Core\Containers\TArray)< [UMaterialInterface](API\Runtime\Engine\Materials\UMaterialInterface) * > & Materials, const [FUsdMaterialBakingOptions](API\Plugins\USDExporter\FUsdMaterialBakingOptions) & Options, const [FString](API\Runtime\Core\Containers\FString) & StageRootLayerPath, bool bIsAssetLayer, bool bUsePayload, bool bReplaceIdentical, bool bReExportIdenticalAssets, bool bIsAutomated )